SIBN · SI-BONE, Inc. · Shareholders & Ownership
Every disclosed holder of SIBN in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns SIBN
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 47,485,295 | 105.95% |
| Insiders (Forms 3, 4, 5) | 2,026,241 | 4.52% |
| 13D/G-only blocks | 3,354,955 | 7.49% |
| Remaining | 8,047,916 | -17.96% |
| Registered funds (N-PORT, not summed) | 16,583,160 | 37.00% |
Shares outstanding: 44,818,575, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of SIBN
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
First Light Asset Management, LLC
13F
CIK 1600004 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
8,127,985 | ||
| 2 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,676,259 | ||
| 2.1 |
BlackRock, Inc.
13G
CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,558,735 | ||
| 2.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,140,221 | ||
| 2.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
404,383 | ||
| 2.4 |
iShares U.S. Medical Devices ETF
Fund
S000009419 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
184,835 | ||
| 2.5 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
147,843 | ||
| 3 |
CADIAN CAPITAL MANAGEMENT, LP
13F
CIK 1423686 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,347,574 | ||
| 3.1 |
CADIAN CAPITAL MANAGEMENT, LP
13G
CIK 1423686 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
3,347,574 | ||
| 4 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,510,963 | ||
| 4.1 |
Small Cap Growth Fund
Fund
S000006193 · Registered fund · Jul 31, 2026
American Century Mutual Funds, Inc., not summed
|
1,895,954 | ||
| 5 |
ORBIMED ADVISORS LLC
13G
CIK 1055951 · Registered investment adviser · Dec 31, 2023
Rule 13d-1(b), qualified institution
|
2,144,631 | ||
| 6 |
BROWN ADVISORY INC
13F
CIK 1345929 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,077,134 | ||
| 6.1 |
Brown Advisory Small-Cap Growth Fund
Fund
S000038483 · Registered fund · Jun 30, 2026
Brown Advisory Funds, not summed
|
376,277 | ||
| 6.2 |
Brown Advisory Sustainable Small-Cap Core Fund
Fund
S000072895 · Registered fund · Jun 30, 2026
Brown Advisory Funds, not summed
|
78,347 | ||
| 7 |
Granahan Investment Management, LLC
13F
CIK 1026710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,931,182 | ||
| 8 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,838,499 | ||
| 9 |
Impax Asset Management Group plc
13F
CIK 1749768 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,425,010 | ||
| 10 |
Impax Small Cap Fund
Fund
S000021459 · Registered fund · Jun 30, 2026
IMPAX FUNDS SERIES TRUST I, not summed
|
1,425,010 | ||
| 11 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,337,048 | ||
| 12 |
GILDER GAGNON HOWE & CO LLC
13F
CIK 902464 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,253,042 | ||
| 13 |
PARADIGM CAPITAL MANAGEMENT INC/NY
13F
CIK 1037792 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,233,200 | ||
| 14 |
|
1,214,286 | ||
| 14.1 |
State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF
Fund
S000012330 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
115,048 | ||
| 14.2 |
State Street Institutional Small-Cap Equity Fund
Fund
S000001631 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL FUNDS, not summed
|
58,810 | ||
| 14.3 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
13,960 | ||
| 14.4 |
State Street(R) SPDR(R) US Small Cap Low Volatility Index ETF
Fund
S000039795 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
12,731 | ||
| 14.5 |
State Street Small-Cap Equity V.I.S. Fund
Fund
S000001636 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
2,560 | ||
| 15 |
|
1,210,324 | ||
| 16 |
SILVERCREST ASSET MANAGEMENT GROUP LLC
13F
CIK 1232395 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,158,576 | ||
| 17 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,076,839 | ||
| 18 |
|
1,026,036 | ||
| 18.1 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
578,354 | ||
| 18.2 |
Nuveen Small Cap Growth Opportunities Fund
Fund
S000005567 · Registered fund · Jul 31, 2026
Nuveen Investment Funds, Inc., not summed
|
210,919 | ||
| 18.3 |
Nuveen Small Cap Select Fund
Fund
S000005569 · Registered fund · Jul 31, 2026
Nuveen Investment Funds, Inc., not summed
|
207,242 | ||
| 18.4 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
58,219 | ||
| 18.5 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
24,026 | ||
| 19 |
Champlain Investment Partners, LLC
13F
CIK 1315478 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
896,462 | ||
| 19.1 |
Champlain Small Company Fund
Fund
S000005803 · Registered fund · Jun 30, 2026
ADVISORS' INNER CIRCLE FUND II, not summed
|
340,135 | ||
| 20 |
Point72 Asset Management, L.P.
13F
CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
790,323 | ||
| 21 |
First Eagle Investment Management, LLC
13F
CIK 1325447 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
768,941 | ||
| 21.1 |
First Eagle Small Cap Opportunity Fund
Fund
S000072438 · Registered fund · Jul 31, 2026
First Eagle Funds, not summed
|
673,476 | ||
| 22 |
|
747,385 | ||
| 23 |
WELLINGTON MANAGEMENT GROUP LLP
13F
CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
742,857 | ||
| 24 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
708,319 | ||
| 24.1 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
145,497 | ||
| 24.2 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
133,515 | ||
| 24.3 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
130,173 | ||
| 24.4 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
48,673 | ||
| 24.5 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
39,352 | ||
| 25 |
MARSHALL WACE, LLP
13F
CIK 1318757 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
690,288 | ||
| 26 |
NEXT CENTURY GROWTH INVESTORS LLC
13F
CIK 1134007 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
585,289 | ||
| 27 |
JNL Multi-Manager Small Cap Growth Fund
Fund
S000001776 · Registered fund · Jun 30, 2026
JNL Series Trust, not summed
|
549,385 | ||
| 28 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
548,287 | ||
| 29 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
457,267 | ||
| 30 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
441,912 | ||
| 30.1 |
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund
S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
|
54,019 | ||
| 30.2 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
49,673 | ||
| 30.3 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
28,835 | ||
| 30.4 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
|
17,847 | ||
| 30.5 |
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund
S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
|
16,690 | ||
| 31 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
439,161 | ||
| 31.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
22,265 | ||
| 31.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
16,851 | ||
| 32 |
HighMark Wealth Management LLC
13F
CIK 1802451 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
425,049 | ||
| 33 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
421,528 | ||
| 34 |
PEREGRINE CAPITAL MANAGEMENT LLC
13F
CIK 764529 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
407,363 | ||
| 35 |
ROYCE & ASSOCIATES LP
13F
CIK 906304 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
395,088 | ||
| 35.1 |
Royce Smaller-Companies Growth Fund
Fund
S000009517 · Registered fund · Jun 30, 2026
ROYCE FUND, not summed
|
265,000 | ||
| 36 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
364,286 | ||
| 37 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
342,784 | ||
| 37.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
183,274 | ||
| 37.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
106,897 | ||
| 37.3 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
24,218 | ||
| 37.4 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
21,723 | ||
| 38 |
Parkman Healthcare Partners LLC
13F
CIK 1777015 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
328,686 | ||
| 39 |
TOCQUEVILLE ASSET MANAGEMENT L.P.
13F
CIK 883961 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
304,000 | ||
| 40 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
288,877 | ||
| 41 |
SEI INVESTMENTS CO
13F
CIK 350894 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
274,747 | ||
| 41.1 |
SIIT EXTENDED MARKET INDEX FUND
Fund
S000035814 · Registered fund · May 31, 2026
SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
|
7,300 | ||
| 42 |
|
270,517 | ||
| 43 |
Embark Small Cap Equity Fund
Fund
S000083503 · Registered fund · Jul 31, 2026
Harbor Funds II, not summed
|
270,156 | ||
| 44 |
HARBOR CAPITAL ADVISORS, INC.
13F
CIK 1039128 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
269,505 | ||
| 45 |
Pier Capital, LLC
13F
CIK 1310051 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
263,781 | ||
| 46 |
ESSEX INVESTMENT MANAGEMENT CO LLC
13F
CIK 201772 · Registered investment adviser · Sep 30, 2026
|
263,101 | ||
| 47 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
253,848 | ||
| 48 |
|
243,418 | ||
| 49 |
|
218,235 | ||
| 50 |
VELA Investment Management, LLC
13F
CIK 1895612 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
201,094 | ||
| 50.1 |
VELA SMALL CAP FUND
Fund
S000069564 · Registered fund · Jun 30, 2026
VELA Funds, not summed
|
189,126 |
23 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
Showing 1–50 of 275 holders
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